This free course was written by David King.
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The material acknowledged below is Proprietary and used under licence (not subject to Creative Commons Licence). Grateful acknowledgement is made to the following sources for permission to reproduce material in this free course:
Introduction figure: © Jackal Pan; GettyImages
Figure 2: © Keith Ryall; Shutterstock.com
Figure 3: courtesy of Nicky Moss
Figure 4: © Javier Zayas Photography; GettyImages
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